相关实验视频
Updated: Jul 12, 2026
15:41
A Microfluidic Chip for the Versatile Chemical Analysis of Single Cells
Published on: October 15, 2013
概括
研究人员使用微加工在玻璃芯片上开发了小型化化学分析系统. 这些系统使用电式送和毛细血管电泳来快速分离和处理没有移动部件的样品.
科学领域:
- 分析化学 分析化学
- 微流体学 微流体学
- 生物技术是生物技术.
背景情况:
- 微型分析系统在速度,便携性和减少试剂消耗方面具有优势.
- 传统的样品处理和分离方法可能耗时,需要大量的样品.
研究的目的:
- 开发和演示基于微芯片的化学分析系统,使用集成的流体操纵和分离.
- 评估微芯片系统对氨基酸分离和样品预处理的性能.
主要方法:
- 使用微加工技术,在玻璃芯片上制造微流体通道和毛细血管.
- 电式抽水被用来控制微通道内的流体流动.
- 毛细血管电泳在微型毛细血管中进行,以分离样品组件.
主要成果:
- 实现了氨基酸的高效分离,在大约15秒内达到75,000个理论板.
- 在不到4秒的时间内证明了大约600个理论板块的快速分离.
- 样品的基本预处理,如稀释,在微流体分流体内成功进行.
结论:
- 这项研究证明了在玻璃芯片上制造小型化,集成化学分析系统的可行性.
- 开发的系统采用了电式送和毛细血管电泳,提供了快速高效的样品处理和分离.
- 这项技术有可能开发用于各种应用的无移动部件的便携式分析设备.
相关概念视频
01:30Capillary Electrophoresis: Applications
Capillary electrophoretic separations offer various modes, each with unique applications. These modes include capillary zone electrophoresis, capillary gel electrophoresis, capillary array electrophoresis, capillary isoelectric focusing, capillary isotachophoresis, micellar electrokinetic chromatography, and capillary electrochromatography.
Capillary zone electrophoresis (CZE) separates ionic components based on their electrophoretic mobility. It has been used to separate proteins, amino acids,...
Capillary zone electrophoresis (CZE) separates ionic components based on their electrophoretic mobility. It has been used to separate proteins, amino acids,...
01:20Capillary Electrophoresis: Instrumentation
Capillary electrophoresis instrumentation typically consists of several key components. A high-voltage power supply generates the electric field necessary for the separation by connecting to an anode (the positively charged electrode) and a cathode (the negatively charged electrode) located in buffer reservoirs at each end of the capillary tube. The system includes a sample vial, a fused silica capillary tube coated with polyimide for mechanical strength through which the sample components...